JPH01174773U - - Google Patents
Info
- Publication number
- JPH01174773U JPH01174773U JP1988069858U JP6985888U JPH01174773U JP H01174773 U JPH01174773 U JP H01174773U JP 1988069858 U JP1988069858 U JP 1988069858U JP 6985888 U JP6985888 U JP 6985888U JP H01174773 U JPH01174773 U JP H01174773U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- center
- protrusion
- fitted
- center core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988069858U JPH01174773U (is) | 1988-05-26 | 1988-05-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988069858U JPH01174773U (is) | 1988-05-26 | 1988-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01174773U true JPH01174773U (is) | 1989-12-12 |
Family
ID=31295126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988069858U Pending JPH01174773U (is) | 1988-05-26 | 1988-05-26 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01174773U (is) |
-
1988
- 1988-05-26 JP JP1988069858U patent/JPH01174773U/ja active Pending
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